package com.ele.web;

import com.ele.pojo.Employee;
import com.ele.service.EmployeeService;
import com.ele.service.impl.EmployeeServiceImpl;
import com.google.gson.Gson;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;


@WebServlet("/emp")
public class EmpAllServlet extends HttpServlet {
    private EmployeeService employeeService = new EmployeeServiceImpl();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        List<Employee> serviceAll = this.employeeService.findAll();
        //将集合对象转换为字符串格式的json数据
        Gson gson = new Gson();
        String json = gson.toJson(serviceAll);
        //告诉客户端这是一个json格式的数据
        resp.setContentType("application/json;charset=utf-8");
        //给客户端响应数据
        resp.getWriter().write(json);


    }
}
